Figure 4-2: CPU card DIP switches set for normal operation
Note: Store spare CPU cards in unused slots in the matrix or in electrically insulated
packaging such as anti-static heavy duty plastic bags.
To insert a CPU card in the matrix:
1) Carefully place the card in the appropriate slot. Make sure the card is
aligned with the top and bottom precision guides.
2) When the card has almost reached the backplane connectors, open the
two ejectors, allowing them to clear the edges of the matrix. Gently
insert the card further until it touches the backplane connector guides.
3) Gently close both ejector tabs at the same time, which will propel the
card into the backplane connectors.
To remove a CPU card from the matrix:
1) Hold the card in place in the matrix.
2) There are two card ejector tabs, located at the top and bottom of the
CPU card. Open the two ejector tabs at the same time until the card
unseats from its backplane connectors.
3) Pull the card out of the matrix.
4.3.1 Hot patching CPU cards
The CPU cards are hot patchable and self initializing.
When the matrix is fitted with two CPU cards, a faulty CPU card can be removed
and replaced while the system is powered because the second CPU card will
automatically begin operating when the first card is removed. It is advisable to
replace CPUs in maintenance down times.
4.3.2 Checking the CPU Card installation
The following lights indicate that the card has been properly installed in the
matrix:
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